From Beyond

Indescribable shapes both alive and otherwise were mixed in disgusting disarray, and close to every known thing were whole worlds of alien, unknown entities. It likewise seemed that all the known things entered into the composition of other unknown things, and vice versa. Foremost among the living objects were great inky, jellyish monstrosities which flabbily quivered in harmony with the vibrations from the machine. They were present in loathsome profusion, and I saw to my horror that they overlapped; that they were semi-fluid and capable of passing through one another and through what we know as solids. These things were never still, but seemed ever floating about with some malignant purpose. Sometimes they appeared to devour one another, the attacker launching itself at its victim and instantaneously obliterating the latter from sight.


A beautiful prop by Uruk-Hai.
Construction photos here.